Comparison

kubic vs Woojong 1

Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.

Head to head
About

kubic

This optical illusion puzzle game challenges players to construct impossible structures inspired by M.C. Escher's art. With a clean design and minimalistic graphics, it offers over 60 mind-bending puzzles across various geometric and spatial themes. Features include layer locking, zoom, and an in-game hint system to aid progression.

Highlights
  • Optical illusion puzzles
  • M.C. Escher inspired designs
  • Geometric and impossible objects
  • Layer locking and manipulation
  • Zoom and view controls
  • In-game hint system
  • Progress syncing via iCloud
Features
Read full description

***** #1 Puzzle Game in over 20 Countries! ***** ***** "This quirky puzzle game bends the limits of space and reality to make you create structures that, in theory, should be impossible to replicate." - Pocket Gamer 8/10 ***** ***** "As soothing as it is challenging, this grown-up puzzler opened our minds. Time flew by as we recreated sculpture after sculpture in increasingly difficult configurations. The game’s 3D graphics invite focus and sharpen problem-solving skills, making it an entertaining brain-builder. M.C. Escher would be impressed by the twisty, physics-defying structures." - App Store Notes ***** kubic is a unique optical illusion puzzle game based on M.C. Escher's art, impossible objects and other geometric designs. The object is to construct the goal configuration from a number of pieces. Presented in a simple, clean design and minimalistic art, kubic is a premium game with over 60 escher-esque puzzles. When you click on a piece, it pops to the front-most layer, and may overlap other pieces. When you combine the pieces, they do not merge. If there are extra pieces, you may hide them behind the others. You can also lock layers and drag pieces without changing their layer order. You can also use two finger pinch to zoom in and out and drag the view for a better control. If you are stuck on a puzzle you can simply skip it and re-visit at a later time. Rest assured, all puzzles can be solved but beware, some puzzles are hard! Just take your time...Tip: It helps to plan ahead and build figures from back to front. If you truly get stuck, there is a in-game hint system. You can use it to get started or even get the whole puzzle solved. Levels divided in 6 groups: • Ocean - "2D" Shapes are basically two-dimensional arrangements. • Desert - "3D" Shapes appear to be three-dimensional, but remember to think in two dimensions. • Mountain - "Convex/Concave" These optical illusions are inspired by Escher's famous "Convex and Concave" lithograph. • Sky - "Up/Down" These optical illusions are inspired by the Penrose Triangle featured in Escher's lithograph "Waterfall”. • Escher - Based on letter designs that spell out MC ESCHER. • Print - Based on the printable magazine version of Convex-Concave puzzles. Kubic is localized and supports 12 languages including English, French, German, Italian, Japanese, Korean, Chinese (simplified), Chinese (traditional), Portuguese, Russian, Spanish, and Turkish Game supports iCloud for progress syncing between devices. Convex Concave puzzles from the Heaven and Earth game are included with permission. The puzzles were designed by Scott Kim, Puzzlemaster (scottkim.com), and the Heaven & Earth team. Enjoy!

About

Woojong 1

Features
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Woojong 1 is the virtual-box packing game. Empty boxes can be packed with numbers. There are easy, medium and hard mode. The next number is shown one at a time from the virtual number warehouse. A player can put the number only from left to right of each box. Everytime a cell of the box is filled in the specific way, one score is earned and the cell turns to green. The specific way is numerically ascending or numerically descending way. For example, if a 3-cells box was packed in the order of 3, 4, 9 or 7, 2, 1, three scores are earned. Each game mode has its own winning goal. 18 game modes in total are ready. '3x3 m.' means three (boxes) by three (cells) and medium."

Screenshots

kubic4 screens
Woojong 14 screens

Verdict

The call

The clearest difference is in-app purchases: Woojong 1 at none against kubic's 5. Woojong 1 also leads on ads (none vs shown). kubic's advantage is update cadence (every 2 months vs every 18 months) and iOS requirement (13.0 vs 15.5). On price and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. kubic sells 5 one-off in-app purchases. Woojong 1 asks for nothing beyond the download.

UpkeepUpdate frequency

kubic ships an update every 2 months, Woojong 1 every 18 months. The most recent releases landed on October 18, 2026 and October 7, 2026 respectively.

Scorecard4 real differences · 6 level
kubic versus Woojong 1: the parameters behind the verdict, then further details
ParameterkubicWoojong 1
PriceFreeFree
Rating4.4 (245 ratings) — better—
Positive reviews36.4% of reviews—
Number of ratings245 — better—
Update frequencyEvery 2 months — betterEvery 18 months
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.0 — better15.5
Further details — not scored
Size383 MB3 MB
Age rating4+4+
DeveloperPixel Envision Ltd.Woojong Son

Bugs and requests

kubic

Reported bugs

5 issues
  • Tiles not sticking correctly
  • App won't launch offline
  • App won't load/crashes on launch
  • In-app purchase attempts forced
  • Bug with in-app purchase activation

Requested features

5 requests
  • Fix tile placement issues
  • Improve difficulty curve
  • Option to rotate puzzles
  • Option to lock in pieces
  • Dark mode for night play

Woojong 1

Not enough reviews yet to summarise bugs or requests.

In-app purchases

5 purchases

kubic

One-time5
  • 10 Hints$0.99
  • No Ads$1.99
  • 25 Hints$1.99
Show 2 more
  • 50 Hints$2.99
  • 100 Hints$3.99
None

Woojong 1

No in-app purchases

Questions

Is kubic free?
kubic is free to download, with in-app purchases available.
Is Woojong 1 free?
Woojong 1 is free to download, with no in-app purchases.
Do kubic or Woojong 1 have ads?
kubic shows ads; Woojong 1 does not.
Which is updated more often, kubic or Woojong 1?
kubic ships an update every 2 months, and Woojong 1 every 18 months. Most recently, kubic was updated on October 18, 2026 and Woojong 1 on October 7, 2026.

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